Compress PST Box





SysTools PST Compress
Tool to Compact & Reduce Outlook PST Data File of Large Size Effectively

(Average Rating 4.6 Based on 64 Reviews)

Quickly Compress Outlook PST files with SysTools Compact PST Tool
for MS Outlook 2016, 2013, 2010, 2007 & all the below versions.

  • Compress large PST file size by Removing, Extracting & Saving attachments
  • Option to Compact Outlook PST files size in batch via Compress PST Utility
  • Software Generates a Log Report to show complete PST compaction details
  • Compact PST Files tool supports compression of both ANSI & UNICODE PST file types
  • Shrink PST file size to minimum possible size With No Data Loss
  • MS Outlook Installation is required to reduce PST file size
  • Compatible with all the versions of MS Outlook and Windows

Free Live Demo: – SysTools PST Compress Tool Fully Secured Download Version

Note: - SysTools PST Compress tool completely removes and save attachments from Outlook PST file to local drive. So that, the size of the PST file is reduced. But if you only want to extract multiple attachments from Outlook PST, then try SysTools Outlook Attachment Extractor tool.

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List of Key Features in SysTools PST Compress Tool

Software to Shrink Outlook PST file, Remove, Extract and Save PST file Attachments

Compres pst file

Compress Large PST File

An ANSI Data file that is about to reach 2 GB is a big concern as this leads to corruption. With this PST Shrinker, you can compact PST files and reduce the size so as to make it easily manageable. PST compact software will extract the attachment and save it as per the requirement.

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PST File Compression Options

You can compact Outlook PST in 3 different ways as per your choice:

  • Remove attachments
  • Extract and save attachments
  • Extract, save and compress attachments

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Remove PST File Attachments

In order to compact Outlook PST file and compress it, the PST compaction software allows removal of attachments. If you choose this option, the software will extract attachments and remove them permanently. This will compress PST files size and remove the attachments from local machine as well.

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Extract & Save Attachments

With the help of this option, you can compact large PST file without deleting its attachments. The PST File Compression Tool will extract all attachments found in a data file and save them into a separate folder. You can find the PST file size reduced to a large extent with all attachments saved in a separate folder via PST Compress Tool.

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Extract, Save & Compress Attachments

Using this option you can extract and save the attachments. Besides this, you can also compress PST file attachments to minimize the size of attachments as well. The PST Compact tool will zip all the attachments that are found within a PST file.

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Show Progress Report

Once you start with PST file compression process, the PST File Compaction Utility will generate a complete export report to compact PST files, together with current progress status. This report includes details like: PST file name, folder name, number of mails found, number of attachments found, and so on.

Download Compact PST Files Software

Try the Demo Version of the Tool to Compress Outlook Data files

Software Download

Size: 1.3 MB

Version: 3.1

MD5: 3c4c0b382940af6ed301109cb422baad

Trial Limitations

Trial version of PST Compress tool compacts the initial 5 emails from each folder of a PST File in order to render the preview.

System Specifications

Hard Disk Space
5 MB of free hard disk space

512 MB of RAM (1 GB is recommended)

1GHz processor (2.4 GHz is recommended)


  • Microsoft .NET framework 4.5 or above should be installed.
  • Microsoft Outlook should be installed and should be configured properly for any valid or dummy profile/account.
  • If you are using Window 10 / 8.1 / 8 / 7 or Vista, then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7 / 8 / 8.1 / 10, 2008 / 2012 (32-bit & 64-bit)
  • MS Outlook – Outlook 2000, 2003, 2007, 2010, 2013, 2016 (32 bit)


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Electronic Delivery

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Software Customization

If you need to customize PST Compress Tool or need additional features then, Request Quote


Get an Overview of PST Compact Tool Features - DEMO & Licensed Version

Features DEMO Version FULL Version
Add PST File & Folder
Remove Selected PST Files
Support All Outlook Versions, (32 bit) 2016 and Below
Windows 10, 8 & All Other Previous Windows Version Supported
Three Compression Options
Batch item compression First 5 Items / PST File
Compress data Files 5 Items / Folder
Cost FREE $49

Frequently Asked Question

How to Compress PST files step by step using this tool?

Compress PST Tool

To Compact & shrink Outlook 2016, 2013, 2010, 2007, 2003, 2002 data file, follow the below mentioned steps:

  • Step 1 –: Install the PST compaction tool & then go to Start menu >> Programs >> SysTools PST Compact Tool
  • Step 2 –: Now, select Add file >> Select & Open
  • Step 3 –: Select the folder to compact PST files & then click on Compress PST >> Browse file >> OK >> Compress PST
  • Step 4 –: Select an appropriate option among the three options: Remove Attachments, Extract & Save Attachments, Extract ,Save Compress Attachments & then click on Compress
  • Step 5 –: The software will show the status as "Compress Successfully".

Yes, PST Compact Software is able to downsize multiple PST files.

With growth in data file size, Outlook becomes slower and after a maximum permissible limit, increase in file size causes PST to be corrupted. Compress PST Files software is the best solution to overcome this problem. It removes / compresses / saves attachments in order to downsize PST file and improve Outlook performance.
Yes, Compact PST files software works smoothly with Windows 10, 8 and all its below versions of the OS.
It depends upon the size of your Data file. But usually, PST File Compact tool shrinks the file in a very short time span.
No, Outlook installation is necessary to run this Compress PST Files tool. It should be installed and configured properly on machine. You can install any version of Outlook (32 bit).
Yes, you can add and process multiple PST files to the PST Shrink tool at a time and in a very short duration it will show you precise results.
Software does not reduce the size of PST file directly. It has three options to reduce PST file. You can choose accordingly
  • Remove Attachments
  • Extract & Save Attachments
  • Extract, Save & Compress Attachments
No, software can decrease Outlook PST file of any size without showing any performance issues. It can compact both ANSI & UNICODE type PST files.
No, Compress PST software only reads the original PST file & it does not produce any type of changes in this source PST file.
No, PST Compact tool is built with the best set of algorithms & latest technology so there is no chance of data loss involved with the usage of this tool. With the absence of malware, spyware, or adware along with no performance risks involved, it is completely safe & secure to use this tool.


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